Leveling machine



April 8, 1930. H. ADAv|-:NPORT Y I 1,753,404

-LLEVELING MAcHlNE Filed No'vl ,8. 1926 l VEN TUE'.

Patented Apr. 8, 193

unirse STATES PATENT OFFICE 'HERMAN A. DAVENPORT, OE EEooKTomMAssAOHUsETTs, AssreNoE To UNITED SHOE MACHINERY oORPoRATiON, yOE rATER-soN, NEW JERSEY, A CORPORATION OE NEW 1 JERSEY Application le'dNovemb'er 8,1926. Serial No. 147,007.

part portions of the-sole have been the only` y Ones treated to any substantialextent heretofore in machines of this type, it being impractical to run the rollover the heel-seat, since whenv it passes the rear end of the heel-seat, it will drop olf the shoe, the end of which will be crushed or otherwise damaged as it rolls on again. n E

The present invention provides lnovel means whereby the heel end of a shoe as well as other portions may be effectively leveledk without danger of damage to the shoe. For the purpose in view the-machine herein shown comprises, in addition to amain leveling roll which operates from the toe end of the shoe rearwardly as heretofore in machines of the type illustrated, a pair of rolls supported on a carrier which is mounted independently of the carrier that supports 4the main rolland so arranged that while one of the pair lof rolls passes over the heel-seat and to the rear Vof the heel end of the shoe inthe leveling operation, the other of the pair of rolls remains on the heel-seat and determines positively by itsy engagement with the shoe the position ofthat rollfwhich leaves the shoe. The roll which passes beyond the heel end of thevshoe is thus maintained at the proper height to return to a position over the heelseat without damage to the shoe. y

The invention also provides various adjustments which enable the forepart and heelseat leveling rolls to be relatively positioned so as to correspond best to each of the varying types of shoes which are treated in the machine.

These and other features of the invention, including various .novel details of construction and combinations of parts, will now be more particularly described reference to the accompanying drawings and pointed out ,in the claims.

In the drawings,

Fig. lis a side elevation of the upper fron portion of the machine; f Y

Fig. 2 is a perspective View of the leveling tools and adjacent partsgand Fig. 3 is al fragmentary side elevation,

partly in section, of the mechanism shownin Fig. 2. Y

Themain portion of the machine including the frame 10, main roll carrier or arm 12 and shoe support or jack mechanism 14 are substantially `'as shown in the patent referred to andoperate as describedtherein, the roll carrier 12 being supported on anarm 13 pivoted at 15 on the frame. For'purposes of 'thisinventiom an additionallroll carrier or arm 16 1s pivoted at Alon the machine frame independently ofthe carrier 12 and has a backwardly extending arm 20'pivoted to a a rod 26 on the upper end of 'which a Ynut Y28 is threaded. AThe other end` o f the rod is pivoted to a knuckle 30 shown: as mounted on the arm 13. lA stiff spring 32 is confined between the enlarged lower end of therod 26 and the nut 24, andforces the-nut 24 and sleeve 22 toward the nut 28. ThusA the limit of downward movement of the front end of the arm 16 is determined .by the positionof the sleeve22 as controlled by the nuts 24, 28, andthe two nuts together can be adjusted to give the spring any desired compression while maintaining any desired position of the sleeve 22.y Obviously the front end of the arm 16 can be raised, compressing the spring by forcing the sleeve downwardly.

carries another bracket 40, angularly adjustable in a substantially vertical plane as permitted by `slots and bolts 42. Pivotally adj ustable on a substantially vertical axis 44 in the bracket is a third bracket 46 held in adjusted position by a clampY 45. j The mounty sleeve 22. This sleeve is closedvat its upper end by a nut .24 through which@ ,slides freely ing of the bracket 34 permits the bracket 46 to be adjusted toward and from a main leveling roll 48 on the carrier 12, toaccommodate shoes of dilerent lengths, and the other two adjustments provide for turning oit the bracket 46 `in substantially vertical and horizontal planes, to accommodate shoes on crooked or twisted lasts. lt will be understood that the roll 48 operates vfrom the toe end rearwardly onthe orepart and shank portions of the shoe as heretofore.

rlhe bracket 46 is shown as an inverted U, and carries a little shaft 50 on which, between the arms or the U, is ln fiounted another U- shaped bracket 52, between the arms of which is a roll 54 on the shaft 50. Thebracket'52 carries a second 4roll 56 just behind the roll 54 with its axis parallel to that or the roll 54. The roll S-can swing with the bracket 52 around v-the'shaiit 50, the bracket being confined between a iiXed stop 58 and an adjustable stop60, whereby the swinging movement can be limited or eliminated.

The operation of the machine will be read- -ily understood. As the shoe is thrown under the rollsby the jack, the sole is pressed up against the rolls 54, 56 which pass down over the forepart, shank and heel-seat, the roll 54 passing completely off the end of the heel-seat as the main roll 48 runs down the shank (as shown in Fig. 3)'. At this time the roll 56 by continued engagement with the shoe bottom supports the bracket 52 and the arm l16 positively against the pressure of the spring 32 with the roll '54 substantially in the plane of the heel-seat, i. e., in substantially the same relation to that plane as when operating on the 'heel-seat, so that as the jack moves'back toward the operator the roll 54 will roll back on to the heel-seat without damage to 4the end of the sole. The rolls 54, 56 may have their surfaces concaved o r shaped in any desired way, and the adjustments provided enable the machine -to conform to a large range or conditions of work.

The heel-seat is thus rolled down smoothly instead of being pitted by hammer blows, as has been the prior practice.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

l. In a leveling machine, a tool arranged to 4pass progressively over and oil the heel-seat or afshoe by relative movement of the tool and the shoe, and Vmeans positively connected to said ytool and arranged to engage the bottom of the shoe to` support the tool at approximately the level of the heel-seat a'ter it has passed therefrom, whereby the tool may return to the heel-seat without undue pressure on the edge of said heel-seat.

2. In alevel-ing machine, a orepart and shank leveling -roll,a heel-seat leveling roll, means for causing the heel-seat leveling roll to pass over the heel-seat of a shoe in the machine and beyond the rear end thereof by relative movement of the shoe and the roll, and positively acting means for engaging the bottom of the shoe to support the heel-seat roll, when not in contact with the h'eel-seat, substantially in the plane of the heel-Seat.

8. In a leveling machine,a roll arranged to be passed over and beyond the rear end o the heel-seat of a shoe in the machine byrela.- tive movement of the shoe and the roll, and means comprising a supplemental roll arranged to engage the bottom of the shoe to support said irst-named roll positively, when not in contact with the shoe, substantially in the plane of the heel-seat.

4. In a leveling machine, an arm carrying a forepart leveling roll, a second arm carrying a heel-seat leveling roll, saidsecond V arm being resiliently pressed toward a shoe in the machine, and means for limiting the movement of the arm toward the shoe.

5. In a leveling machine, an larm carrying a forepart leveling roll, a second arm carrying a heel-seat leveling roll, said second arm being resiliently pressed toward a shoe in the machine, and means ttor adjustably limiting the movement of the arm toward the shoe.

6. ln a leveling machine, a ack, a pivoted arm, a plurality of parallel rolls on said arm arranged to engage theheel-seat oi a shoe on the jack, one or said rolls being arranged to pass oli the end of the heel-seat a-ndto be supported positively, while oft the'heel-seat, substantially in the plane of the heel-seat-by the continued engagement of another Vofsaid rolls with the heel-seat.

7. ln a leveling machine, a -shoe support, a plurality oit leveling tools arranged. toepcrate in locations spaced apart lengthwise oi a shoe on said support, dilerent carriers for the diilerent respective tools each mounted independently oi the other 'for movement heightwise of the shoe to press the tool carried thereby upon the 'bott-om of the shoe, the shoe support and said carriers being relatively movable to cause vthe tools 'to operate progressively along the bottom 'of the shoe and to cause one of the tools to pass to the rear of the heel end of the shoe, and means on the carrier which supports said last-named tool for engaging the bottom ot Ithe shoe to prevent any substantial movement or thatftool below the plane of the heel-seat when it passes to the rear of the heel end of the shoe.

8. In a leveling machine, a shoe support, a plurality of leveling rolls arranged to operate in locations spaced lapart lengthwise of a shoe on said support, diiierent carriers for the diii'erent respective rolls `each mounted independently of the other -for movement heightwise of the shoe to press the roll vcarried thereby upon the bottom oi the shoe, the shoe support and said carriersbeing*relatively movable to cause lthe rolls to operate progressively along the bot-tom vot the l.shoe

and to cause one of the rolls to pass to the rear of the heel end of the slice, vand an additional roll mounted on the lcarrier which supports said last-named roll'for engaging the bottom of the shoe to prevent any substantial movement of said last-named roll below the plane of the heel-seat when it leaves the shoe. Y

9. In a leveling machine, a shoe support, a plurality 01": leveling rolls arranged to operate in locations spaced apart lengthwise of a shoe on said support, different carriers for the diierent respective rolls comprising arms mounted for swinging movements relatively to each other heightwise of the shoe to press the rolls carried thereby upon the bottom of the shoe, the shoe support and said carriers being relatively movable to cause the rolls'to operate progressively along the bottom of the slice and to cause one of the rolls to pass to the rear of the heel end of the shoe, and a supplemental roll mounted on the carrierwhich supports said last-'named roll for engaging the bottom of the shoe to prevent any subf stantial movement of said last-named roll be-` low the plane ofthe heel-seat when it passes to the rear of the heel end of the shoe.

10. In a leveling machine, a shoe support, a plurality of leveling rolls arranged to operate in locations spaced apart lengthwise of a shoe on said support, different lcarriers for the di'erent respective rolls each mounted independently of the other Jfor movement heightwise of the shoe to press the roll carried thereby upon the bottoml ofthe shoe, the

shoe support and said carriers being relative ly movable to cause the rolls to operate yprogressively along the bottom of the shoe and to cause oneY of .the rolls to pass to the rear of the heel end of the shoe and thereafter to return to a position over the shoebottom, and an additional roll mounted on the carrier which supports said last-named roll for engaging the bottom of the shoe to determine the relation of said last-named rollito the plane of the heel-seat in its return to a position over the shoe bottom.

ll. In a leveling machine, a shoe support, a roll carrier having thereon a leveling roll arranged to operate on the bottom of a shoe on said support from the toe end of the shoe rearwardly, and an additional rollV carrier movable heightwise of the shoe relatively to said lirst-named carrier and having thereon a pair of rolls arranged to operate on portions of the shoe bottom including the heelseat, the shoe support and said roll carriers being relatively movable to cause the rolls to operate progressively along the bottom of the shoe and to cause one of said pair of rolls to pass to the rear of the heel end of the shoe while the other of the pair of rolls remains in engagement with the bottom of the shoe to determin-e the relation of that roll which leaves the shoe to the plane of the heel-seat.

12. In a leveling machine, a shoe support,

a roll carrier having thereon a leveling roll shoe, the shoe support and said roll carriers being relatively movable to cause the rolls to operate progressively along the bottom of the shoe and to cause one of the rolls on said additional carrier to pass to the rear of the heel end of the shoe while another of said rolls remains in engagement with the bottom of the shoe to control said additional' carrier. y

13. In a leveling machine, a shoe support, a roll carrier having thereon a leveling roll arranged to operate on the bottom of a shoe on said support from the toe end of the shoe rear- .wardly, and an additional roll carrier movable heightwise of the shoe relatively to said first-named carrier and having thereon a pair of rolls arranged to operate on portions of the shoe bottom including the heel-seat, the shoe support and said roll carriers being relatively movable to cause the rolls to operate progressively along the bottom of the shoe and to cause one of said pair of rolls to pass to the rear of the heel end of the shoe while the other of the pair of rolls remains in engagement with the bottom of the shoe to determine the relation of that roll which leaves the shoe to the plane of the heel-seat, said pair of rollsV being adjustable to vary the angular relation of their axes to the axis of the first-named roll.

lll. In a'leveling machine, a shoe support, a roll carrier having thereon a leveling roll arranged to operate on the bottom of a shoe on said support from the toe end of the shoe rearwardly, and an additional roll carrier movable heightwise of the shoe relatively to said first-named carrier and having thereon a pair of rolls arranged to operate on portions of the shoe bottom including the heel-seat, the shoe support and said roll carriers being relatively movable to cause the rolls to operate progressively along the bottom of the shoe and to cause one of said pair of rolls to pass to the rear ofthe heel end of the shoe while the other of the pair of rolls remains in engagement with the bottom of the shoe to dey termine the relation of that roll which leaves the shoe to the plane of the heel-seat, said pair of rolls being adjustable lengthwise of the shoe toward and from the first-named roll.

In testimony whereof I have signed my name to this specilication.

HERMAN A. DAVENPORT. 

